package interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class CheckLoginInterceptor implements HandlerInterceptor {

	public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
			Object handler) throws Exception {
		String user=(String) request.getSession().getAttribute("user");
		if(user==null){
			response.sendRedirect(request.getContextPath()+"/showLogin");
			return false;
		}
		return true;
	}
	
	public void postHandle(HttpServletRequest request, HttpServletResponse response,
			Object handler, ModelAndView mav) throws Exception {
	}

	public void afterCompletion(HttpServletRequest request,
			HttpServletResponse response, Object handler, Exception exception)
			throws Exception {
	}
}
